完整版283六年级解方程专项练习200题有答案okdoc.docx
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完整版283六年级解方程专项练习200题有答案okdoc.docx
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完整版283六年级解方程专项练习200题有答案okdoc
六年级解方程专项练习200题(有答案)
(1)x﹣=,(9)2x﹣x=1.2,
(2)x××
=,
(10)9×3﹣1.7x=13.4,
(11)x﹣25%x=24,
(3)﹣4x=,
(12)x﹣+0.2=,
(4)8×2.5﹣2x=13.6
(5)0.78:
x=3:
5,(13)0.6x+90%x=78,
(6)1﹣20%x=0.4,(14)20%x﹣2.4×3=0.8,
(8)1÷(x﹣)=6,(15)x﹣x=42,
第1页共28页
(16)0.6x+3×2.5=67.5,
(23)4x﹣=3,
(17)1÷(x﹣0.45)=5,
(18)x﹣2.25=8.25,
(19):
x=3:
12,
(20)x+0.8=5.6,
(24)12x+7×0.3=20.1,
(25)x+x=,
(26)x:
42=,
(27)×0.5+x=,
(21)1.4:
x=1:
0.75,
(28)0.8:
=0.48:
x,
(22)x×(2﹣)=24,(29)χ﹣χ=,
第2页共28页
(30)42:
=χ:
(31)5x﹣0.4=75%,
(32)6x﹣0.9=4.5,
(33)2(x﹣3)=5.8,
(34)1.6x=6.4,
(35)4x﹣3×9=29,
(36)16+8x=40,
(37)x÷1.1=3,
(38)+2x=,
(
39)×3﹣7x=1.04,
(40)x﹣1﹣x=2,
(41)x﹣x=14,
(42)3x﹣x=,
(43)=,
(44)1.2:
=,
(45)=:
,
(46):
=x:
0.8,
第3页共28页
(47)x=+1,(55)x:
0.3=:
,
(48)1﹣25%X+25%x=+25%x,
(56)150%x+66=99
=,
(49)(57)x+6﹣0.8x=16
×X=,
(50)(58)
(51)5:
8=x:
32,
(59)
(52)2x+3×0.9=24.9,
(60)3÷(X﹣)=1.3
(53)5.3x﹣2.9x=,
(61)(X+0.5):
2=(X﹣4):
,
(54)×(7﹣2.8x)=1.5,
(62)X÷0.05=3.528,
第4页共28页
(63)2X﹣4×6=80,
(72)
(64)4×4.5﹣3X=6.38,
(73),
(65)4X﹣7.2=10,
(74)4(+x)=,
(66)11.5X+X=20,
(75)×0.25+x=,
(67)3.8×12+15X=87.6,
(76)x﹣,
(68)6X+5=17,
(69)0.6×(2.5+X)=4.2,
(77)200:
6=x:
,
(70):
=X:
,
(78)4÷X=,
(71),
(79)8(x﹣2)=2(x+7),
第5页共28页
(80):
18%=,
﹣2x=,
(81)
x+x=46,
(82)
(83):
x=:
,
(84)=,
(85)5(3x﹣4)﹣2(x﹣1)=5(2x﹣1)
(86)=,
(87)8(2X﹣7)=5(X+13),
(
88)3(x+4.5)=60,
(89)1.6x+2.4=7.52,
(90)3(x﹣0.8)=6.3,
(91)28.4﹣5x=5.8,
(92)x:
=
(93)+2x=,
(94)x=15%,
(95)x﹣x=,
第6页共28页
(96)x+50%x=6,
(104)x﹣,
(97):
x=0.3:
12,
(105)x×,
(98)4x+2(8﹣x)=26,
(106)5x+35=650,
(99)x﹣=0,
(107)720÷3x=80,
(100)+x=1,
(108)3.6x﹣0.9x=8.1,
(101)x×(+)=,
(109)4×4.5﹣3x=6,
(102),
(110)=,
(103),
(111)6×3﹣1.8X=7.2,
第7页共28页
(112)÷x=,
(113)x÷=42,
(120)22.5﹣0.4x=12.5,
(121)x:
3.5=4:
2,
(114)x+=,
(122)x﹣0.8x﹣6=16,
(123):
=x:
8,
(115)7x÷3=8.19,
(116)12:
0.6=x:
,(124),
(117)3(x+2)=4(x+1),
(125)x:
15=:
,
(118)3x﹣70%x=9.2,
(126)x+x=,
(119)6+x=240,(127)x×50%﹣x=5,
第8页共28页
(128)1﹣x=,
(129)2.5+1x=3,
(130)3x﹣2=4,
(131)8.5﹣3x=2,
(132)3÷x=4,
(133)x﹣5%=17.54,
(134):
=:
(4﹣x),
(135)6x+31=49,
(136)7x÷3=8.19,
(137)32.8﹣9x=17.5,
(138)x﹣0.36x=16,
(139)6×7+3x=69,
(140)6x+2x﹣56=0,
(141)3x﹣0.45×4=2.7,
(142)5.8x﹣4.6x=0.96,
(143)8.4÷(9﹣x)=3,
第9页共28页
(144)3x÷1.2=8,(153)7.8﹣3x=3.6,
(145)5x+28=71,(154)6×3﹣1.8x=7.2,
(146)8.7﹣1.2x=3.9,(155)10:
x=4.5:
0.8,
(147)8x﹣2.6x=37.8,
(156):
=x:
,
(148)0.75x﹣0.95×4=8.5,
(157)X﹣7.65=4.64,
(149)54÷2+3x=72,
(158)28.25﹣X=8.25,
(150)8x﹣2.6=37.8,(159)X﹣(3.6+2.97)=12.42,
(151)x÷=,
(160)÷x=,
(152)x+30%x=26,
(161)14.5=5.5,
第10页共28页
(162)x﹣80%x=48,
(171)5÷x=,
(163)75%x﹣5×=6,
(172)﹣x=,
(164)x﹣6.8=15.4,
(173)4.5×﹣3x=1.5,
(165)1.9x=5.7,
(174)(1+25%)x=0.5,
(166)4.3y﹣y=4.6,
(175)x﹣40%x=9,
(167)5x+2.6=7.6,
(176)x×20%=15.2,
(168)x﹣1.5=12.9,
(178)x﹣x=,
(169)9x+5x=8.4,
(170)6.8+3.2x=14.8,
(179)x÷75%=3,
第11页共28页
(180)4x﹣,
(181):
x=:
4.5,
(182)(x﹣4.5)×6=12.5,
(183)27﹣17x=13.4,
(184)9.6+3x=3.24×5,
(185)2x+5=5x﹣7,
(186)3(x﹣2)=2﹣5(x﹣2),
(187)4x﹣3(20﹣x)+4=0,
(188)﹣=1,
(189)4x﹣5×6=12,
(190)8x﹣3x=15.6,
(191)30×(x÷4)=60,
(192)7.2×0.5﹣3x=1.2,
(193)5x﹣2.4×5=8,
(194)+x=×2,
(195)5x+2.4×15=66,
第12页共28页
(196)3.2x+2.8x-x=1,
(197)2.5×16-8x=12,
(198)9.6-3x=6.3,
(199)5(x+6)=75,
(200)x÷0.7+0.9×3=4,
第13页共28页
解方程专项练习200题答案:
(1)x﹣=,
=,
,
x=;
(2)x××=,
x=,
x×21=×21,
x=12;
(3)﹣4x=,
﹣4x+4x=+4x,
=+4x,
÷4=4x÷4,
x=.
1÷(x﹣)×(x﹣)=6×(x﹣),
1=6
×(x﹣),
6x
﹣6×=1,
6x
﹣3=1,
6x=4
,
6x
÷6=4÷6,
x=
(9)2x﹣x=1.2,
x(2﹣)=1.2,
x=1.2,
x÷=1.2÷,
x=1;
(10)9×3﹣1.7x=13.4,
27﹣1.7x=13.4,
27﹣1.7x+1.7x=13.4+1.7x,
13.4+1.7x=27,
13.4+1.7x﹣13.4=27﹣13.4,
1.7x=13.6,
1.7x÷1.7=13.6÷1.7,
x=8
(4)8×2.5﹣2x=13.6
(11)x﹣25%x=24,
20
﹣2x=13.6,
75%x=24
,
13.6+2X=20
,
75%x
÷75%=24÷75%,
2X=6.4
,
x=32
;
x=3.2
;
(5)0.78
:
x=3:
5,
(12)x﹣+0.2=
,
3x=0.78
×5,
3x=3.9
,
x﹣0.6=
,
x=1.3
(6)1﹣20%x=0.4,
x﹣0.6+0.6=+0.6,
1﹣20%x+20%x=0.4+20%x,
0.4+20%x=1
,
x=,
0.4+20%x﹣0.4=1﹣0.4,
20%x=0.6
,
x÷=
÷,
20%x×
=0.6×,
x=3
;
x=1
(8)1
÷(x﹣)=6,
(13)0.6x+90%x=78,
第14页共28页
1.5x=78,
1.5x÷1.5=78÷1.5,
x=52;
(14)20%x﹣2.4×3=0.8,
20%x﹣7.2=0.8,
20%x﹣7.2+7.2=0.8+7.2,
20%x÷20%=8÷20%,
x=40;
(15)x﹣x=42,x=42,
x÷=42÷,
x=252
(16)0.6x+3×2.5=67.5,
0.6x+7.5=67.5
,
0.6x+7.5
﹣7.5=67.5
﹣7.5,
0.6x=60
,
0.6x
÷0.6=60÷0.6,
x=100
;
(17)1÷(x﹣0.45)=5,
÷(x﹣0.45)×(x﹣0.45)=
(x﹣0.45),
x﹣2.4=1.6,
x﹣2.4+2.4=1.6+2.4,
x=4,
x÷=4÷,
x=
(18)x﹣2.25=8.25,
x﹣2.25+2.25=8.25+2.25,
x=10.5;
(19):
x=3:
12,
3x=
×12,
3x÷3=9÷3,
x=3
(20)x+0.8=5.6,
x+0.8﹣0.8=5.6﹣0.8,
x=4.8,
x×=4.8×,
x=8.
(21)1.4:
x=1:
0.75,
x=1.4×0.75,
x=1.05
(22)x×(2﹣)=24,
x×=24,
x×÷=24÷,
x=20;
(23)4x﹣=3,
4x﹣+=3+,
4x=4,
4x÷4=4÷4,
x=1
(24)12x+7×0.3=20.1,
12x+2.1=20.1,
12x+2.1﹣2.1=20.1﹣2.1,
12x÷12=18÷12,
x=1.5;
(25)x+x=,
x=,
x×,
x=;
(26)x:
42=,
10x=42×,
10x÷10=30÷10,
x=3
(27)×0.5+x=,
第15页共28页
0.75+
x=3.75,
x
﹣3+3=2.9+3,
x=5.9
;
0.75+
x﹣0.75=3.75
﹣0.75,
(34)
1.6x=6.4
,
1.6x÷1.6=6.4
÷1.6,
x=3,
x=4
;
(35)4x﹣3×9=29,
x÷=3÷,
4x
﹣27=29,
4x﹣27+27=29+27,
x=6
;
4x=56
,
4x÷4=56÷4,
(28)0.8:
=0.48:
x,
x=14
;
(36)16+8x=40,
0.8x=
×0.48,
16+8x﹣16=40﹣16,
8x=24
,
0.8x=0.2
,
8x
÷8=24÷8,
0.8x
÷0.8=0.2
÷0.8,
x=3
;
x=
(37)x÷1.1=3,
x÷1.1×1.1=3×1.1,
(29)χ﹣
χ=
,
x=3.3
(38)+2x=
,
x=
,
+2x
=
,
x
=
,
x=3
;
2x=
,
2x
÷2=÷2,
(30)42:
=χ:
x=
;
x=42×,
(39)
×3﹣7x=1.04,
x
=30
,
2.16
﹣7x=1.04,
x=50
;
2.16
﹣7x﹣1.04=1.04﹣1.04,
1.12
﹣7x=0,
(31)5x﹣0.4=75%,
7x
÷7=1.12÷7,
5x﹣0.4+0.4=75%+0.4,
x=0.16
;
5x
÷5=1.15÷5,
(40)x﹣1﹣x=2,
x=0.23
x﹣1=2,
(32)
6x
﹣0.9=4.5,
x﹣1+1=2+1,
6x
﹣0.9+0.9=4.5+0.9,
6x=5.4
,
x=3,
6x
÷6=5.4÷6,
x=0.9
;
x
=3
,
(33)2(x﹣3)=5.8,
x=18
;
2(x﹣3)÷2=5.8÷2
(41)x﹣x=14,
x
﹣3=2.9,
第16页共28页
x=14,
x=1
x
=14
,
(48)1﹣25%X+25%x=+25%x,
x=18
;
0.25x+0.25
﹣0.25=1﹣0.25,
(42)3x﹣
x=
,
0.25x=0.75
,
x=3
;
x=
,
(49)
=
,
x
=
,
0.25x=1.25
×1.6,
0.25x÷0.25=1.25
×1.6÷0.25,
x=
;
x=8
;
×X=
,
(43)
=
,
(50)
2.4x=72
×0.26,
×X÷=
,
2.4x=18.72
,
x=
;
2.4x÷2.4=18.72
÷2.4,
x=7.8
;
(51)5:
8=x:
32,
(44)1.2:
=
,
8x=5×32,
8x÷8=5×32÷8,
x=1.2×5,
x=20
(52)2x+3×0.9=24.9,
x=6,
2x+2.7=24.9
,
2x+2.7
﹣2.7=24.9
﹣2.7,
x
=6
,
2x
÷2=22.2÷2,
x=11.1
;
x=9
;
(53)5.3x﹣2.9x=,
(45)
=
:
,
2.4x=
,
x=18×
,
2.4x
÷2.4=
÷2.4,
x=
,
x=
;
x
=
,
x=12
;
(54)×(7﹣2.8x)=1.5,
(46)
:
=x:
0.8,
×(7﹣2.8x)
=1.5
,
x=
×0.8,
7
﹣2.8x=2.1
,
7
﹣2.8x+2.8x=2.1+2.8x
,
x
=0.04
,
7
﹣2.1=2.1+2.8x
﹣2.1,
4.9
÷2.8=2.8x
÷2.8,
x=0.2
;
x=1.75
;
(47)x
=
+1,
(55)x:
0.3=
:
,
x
×=
×,
x=0.3×,
第17页共28页
x=
,
2X﹣24+24=80+24,
2X=104
,
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